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Niggliite Mineral Data
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General Niggliite Information
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 Chemical Formula: |
PtSn |
| Composition: |
Molecular Weight = 313.79 gm |
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Tin 37.83 % Sn |
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Platinum 62.17 % Pt |
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______ |
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100.00 % |
| Empirical Formula: |
PtSn |
| Environment: |
In late-forming hydrothermal veins. |
| IMA Status: |
Valid Species (Pre-IMA) 1937 |
| Locality: |
Waterfall Gorge, Insizwa, Griqualand, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Paul Niggli (1888-1953), Professor at Zurich, Switzerland. |
| Name Pronunciation: |
Niggliite + Pronunciation  |
| Synonym: |
ICSD 42593 |
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PDF 25-614 |
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Niggliite Image |
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Images:
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Niggliite Insizwaite
Comments: B&W image of a polished section showing insizwaite grain (I) showing details of niggliite (N) inclusions and exsolved chalcopyrite (C) lamellae in the pentlandite (P). (MinMag, v38:299).
Location: Insizwa deposit, Waterfall Gorge, Pondoland and East Griqualand areas (Transkei), South Africa.
Scale: See Image.
© Mineralogical Magazine |
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Niggliite Crystallography
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| Axial Ratios: |
a:c = 1:1.32473 |
| Cell Dimensions: |
a = 4.111, c = 5.446, Z = 2; V = 79.71 Den(Calc)= 13.07 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
| X Ray Diffraction: |
By Intensity(I/Io): 1.486(1), 2.05(1), 2.15(1), |
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Physical Properties of Niggliite
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| Cleavage: |
None |
| Color: |
Silver white. |
| Density: |
13.44 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Hardness: |
3 - Calcite |
| Luster: |
Metallic |
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Optical Properties of Niggliite
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| RL Anisotrophism: |
Very high, bright pinkish cream to very dark blue or black. |
| RL Color: |
Silver white with a pinkish to bluish tint. |
| RL Pleochroism: |
Strong, from pinkish cream to pale cobalt blue. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Niggliite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
52.40 |
55.00 |
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| 420 nm |
51.10 |
54.90 |
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| 440 nm |
49.80 |
54.80 |
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| 460 nm |
47.40 |
54.40 |
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| 480 nm |
46.60 |
55.00 |
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| 500 nm |
46.40 |
55.40 |
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| 520 nm |
45.80 |
55.90 |
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| 540 nm |
45.50 |
57.30 |
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| 560 nm |
45.40 |
58.90 |
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| 580 nm |
45.00 |
60.00 |
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| 600 nm |
44.30 |
62.00 |
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| 620 nm |
42.80 |
62.90 |
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| 640 nm |
41.10 |
64.40 |
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| 660 nm |
39.50 |
66.20 |
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| 680 nm |
37.70 |
67.20 |
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| 700 nm |
36.30 |
66.70 |
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Calculated Relative Intensity Colors of Niggliite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
| R1 |
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| R2 |
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Calculated Properties of Niggliite
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| Electron Density: |
Bulk Density (Electron Density)=10.7 gm/cc
note: Specific Gravity of Niggliite =13.1 gm/cc.
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| Fermion Index: |
Fermion Index = 0.27
Boson Index = 0.73 |
| Photoelectric: |
PENiggliite =1,114.75 barns/electron
U=PENiggliite x rElectron Density=11886.51 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Niggliite is Not Radioactive |
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Niggliite Classification
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| Dana Class: |
01.02.10.01 (01)Native Elements |
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(01.02)with platinum group metals and alloys |
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(01.02.10)Dana Group |
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01.02.10.01 Niggliite PtSn P 63/mmc 6/m 2/m 2/m |
| Strunz Class: |
01.AG.60 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AG -PGE-metal alloys |
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01.AG.60 Niggliite PtSn P 63/mmc 6/m 2/m 2/m |
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Other Niggliite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Niggliite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Niggliite Specimen Label here :
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Niggliite
PtSn
Dana No: 01.02.10.01 Strunz No: 01.AG.60
Locality:
Notes:
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